如今网络上到处都是免费的教育资源，真正稀缺的是对学习的渴望。
Free education is abundant, all over the Internet. It's the desire to learn that's scarce.
世界是由转瞬即逝的时刻组成的马赛克，每一个时刻本身都是珍贵的。
The architect must be a guardian of the future.